
/*
 * Janino - An embedded Java[TM] compiler
 *
 * Copyright (c) 2001-2010 Arno Unkrig. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
 * following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
 *       following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
 *       following disclaimer in the documentation and/or other materials provided with the distribution.
 *    3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
 *       products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.codehaus.commons.compiler.util.resource;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

/**
 * Creates resources as byte arrays in a delegate {@link java.util.Map}.
 */
public
class MapResourceCreator implements ResourceCreator {

    private final Map<String, byte[]> map;

    /**
     * Auto-create the delegate {@link Map}.
     */
    public
    MapResourceCreator() { this.map = new HashMap<String, byte[]>(); }

    /**
     * @param map String fileName =&gt; byte[] data
     */
    public
    MapResourceCreator(Map<String, byte[]> map) { this.map = map; }

    /**
     * @return The {@link String}-to-{@code byte[]} map of the resources created
     */
    public final Map<String, byte[]>
    getMap() { return this.map; }

    @Override public final OutputStream
    createResource(final String resourceName) {
        return new ByteArrayOutputStream() {

            @Override public void
            close() throws IOException {
                super.close();
                MapResourceCreator.this.map.put(resourceName, this.toByteArray());
            }
        };
    }

    @Override public final boolean
    deleteResource(String resourceName) { return this.map.remove(resourceName) != null; }
}
